. 2023 Jun 8;8(24):21898–21905. doi: 10.1021/acsomega.3c01638

Table 3. Precision Levels (Intra & Inter-Day, Inter-Person) for the Analytical Validation of the Rapid Method^a.

fortification level (ppm)	intra-day	inter-day			inter-person
	analyst¹	analyst¹			analyst¹	analyst²	analyst³
	RSD %	1st day RSD %	2nd day RSD %	3rd day RSD %	1st day RSD%	2nd day RSD%	3rd day RSD %
5	0.34	0.35	0.36	0.34	0.32	0.39	0.35
10	0.39	0.46	0.48	0.38	0.84	0.95	1.16
15	0.74	0.65	0.69	0.75	1.25	1.05	1.33

RSD: Relative Standard Deviation (%); intra-day: n = 10; inter-day: n = 3; inter-person: n = 3.

Table 3. Precision Levels (Intra & Inter-Day, Inter-Person) for the Analytical Validation of the Rapid Methoda.